Positioning tool for piston machining

Abstract

The utility model relates to the technical field of piston machining and positioning, in particular to a positioning tool for piston machining, which is fixedly mounted on a base through a supporting column, a positioning seat is fixedly mounted on the supporting column, the supporting column penetrates through the positioning seat, a pressing device is mounted on the supporting column, and a fixing seat is fixedly mounted on the positioning seat. Rectangular grooves are formed in the two sides of the fixing base, the connecting shaft is rotationally installed on the fixing base and located in the rectangular grooves, the positioning blocks are fixedly installed on the connecting shaft, the driving assembly is installed on the fixing base, and the driving assembly drives the positioning blocks on the two sides to rotate towards the sides away from each other under the running fit of the connecting shaft and the fixing base. The positioning blocks on the two sides are in tight contact with the inner wall of the skirt portion of the piston and clamp the piston, so that effective positioning of the piston is achieved, the positioning blocks can meet positioning of pistons of different models through rotation adjustment of the positioning blocks, replacement of positioning components is avoided, and positioning of the piston is more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of piston processing and positioning, in particular to a positioning tool for piston processing. Background Art

[0002] The piston is a reciprocating part in the cylinder block of a car engine. The basic structure of the piston can be divided into the top, the head and the skirt. When processing the piston, it is necessary to drill holes on the side of the piston. Since the piston is a cylindrical structure, it is difficult to fix it with traditional positioning tooling.

[0003] Existing patent CN 219561494 U is a piston processing fixing tool. The lower end of the piston is clamped on the positioning plate, and the positioning plate positions the lower end of the piston to prevent displacement of the piston during drilling. Then, the operating handle is used to operate the turntable to rotate. The rotation of the turntable can drive the threaded rod to rotate. The threaded rod rotates downward, which can drive the adjustment pressure column downward. The pressure head on the adjustment pressure column applies pressure to the upper end of the piston, so that the piston is reliably fixed on the positioning plate to complete the fixation of the piston.

[0004] However, in the process of using a piston processing and fixing tooling of an existing patent, although the device can effectively fix the piston, when fixing pistons of different models, it is necessary to constantly disassemble the positioning plate and replace the positioning plate matching the piston, which makes the fixing of the piston more troublesome. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning tool for piston processing, which solves the problem that although the aforementioned device can effectively fix the piston, when fixing pistons of different models, it is necessary to constantly disassemble the positioning plate and replace the positioning plate matching the piston, which makes the fixing of the piston more troublesome.

[0006] To achieve the above-mentioned purpose, the utility model provides a positioning tool for piston processing, including a base, a positioning seat, a support column and a pressing device, the support column is fixedly installed on the base, the positioning seat is fixedly installed on the support column, and the support column passes through the positioning seat, the pressing device is installed on the support column, and also includes a positioning device, the positioning device includes a fixed seat, a positioning block, a connecting shaft and a driving assembly, the fixed seat is fixedly installed on the positioning seat, rectangular grooves are provided on both sides of the fixed seat, the connecting shaft is rotatably installed on the fixed seat and is located in the rectangular groove, the positioning block is fixedly installed on the connecting shaft, and the driving assembly is installed on the fixed seat.

[0007] Wherein, the driving assembly comprises a driving cone and a rotating member, and the driving cone is mounted on the fixing seat through the rotating member and is close to the positioning block.

[0008] Among them, the rotating component includes a screw, a connecting disk and a rotating rod, the screw passes through the positioning seat, and the thread passes through the fixed seat, and the driving cone is fixedly mounted on the screw; the connecting disk is fixedly mounted on one end of the screw away from the driving cone; the rotating rod is fixedly mounted on the connecting disk.

[0009] Among them, the pressing device includes a top seat, a pressing block, a support spring and a lifting assembly, the top seat is slidably installed on the support column through the lifting assembly; the support spring is sleeved on the support column and is located between the top seat and the positioning seat; the pressing block is fixedly installed on the top seat.

[0010] Among them, the lifting component includes a threaded barrel and a rotating plate, the threaded barrel is threadedly connected to the support column, and the threaded barrel is in pressure contact with the top seat; the rotating plate is fixedly installed on the threaded barrel.

[0011] The utility model discloses a positioning tool for piston processing. When in use, one end of the piston with the skirt is moved downward so that the positioning blocks on both sides are inserted into the interior of the skirt of the piston. Then, the rotating rod is rotated to drive the connecting plate to rotate. The rotation of the connecting plate drives the screw to rotate accordingly through the fixed connection with the screw. Since the screw is threadedly connected with the fixing seat, the screw moves downward along the fixing seat. The movement of the screw drives the driving cone fixedly connected thereto to move downward. Since the driving cone is surrounded by inclined surfaces, the movement of the driving cone pushes the positioning blocks on both sides to rotate toward the side away from each other under the rotation cooperation of the connecting shaft and the fixing seat, so that the positioning blocks on both sides are in tight contact with the inner wall of the piston skirt and the piston is clamped. Then, through the action of the pressing device, the top end of the piston is limited, thereby realizing effective positioning of the piston. Moreover, through the rotation adjustment of the positioning block, the positioning block can meet the positioning of pistons of different models, avoiding the replacement of the positioning component, thereby making the positioning of the piston more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the overall structure of a positioning tool for piston processing according to the first embodiment of the utility model.

[0014] Figure 2 It is a structural schematic diagram of a positioning device according to the first embodiment of the utility model.

[0015] Figure 3It is a structural schematic diagram of a fixing base according to the first embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the overall structure of a positioning tool for piston processing according to the second embodiment of the utility model.

[0017] In the figure: 101-base, 102-positioning seat, 103-support column, 104-fixed seat, 105-positioning block, 106-coupling shaft, 107-rectangular groove, 108-driving cone, 109-screw, 110-connecting plate, 111-rotating rod, 201-top seat, 202-down pressure block, 203-support spring, 204-threaded cylinder, 205-rotating plate. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0019] The first embodiment of the present application is:

[0020] See also Figure 1-3 , Figure 1 This is a schematic diagram of the overall structure of a positioning tool for piston processing in the first embodiment of the utility model. Figure 2 is a schematic structural diagram of a positioning device according to a first embodiment of the utility model, Figure 3 It is a structural schematic diagram of a fixing base according to the first embodiment of the utility model.

[0021] The utility model provides a positioning tool for piston processing: comprising a base 101, a positioning seat 102, a support column 103 and a pressing device, and also comprising a positioning device, wherein the positioning device comprises a fixing seat 104, a positioning block 105, a connecting shaft 106 and a driving assembly, wherein the driving assembly comprises a driving cone 108 and a rotating member, wherein the rotating member comprises a screw 109, a connecting disk 110 and a rotating rod 111. The above-mentioned scheme solves the problem that although the above-mentioned device can realize effective fixation of the piston, when fixing pistons of different models, it is necessary to continuously disassemble the positioning disk and replace the positioning disk matching the piston, which makes the fixation of the piston more troublesome. It can be understood that the present scheme can also be used to solve the problem of axial displacement of the piston.

[0022] In this embodiment, by rotationally adjusting the positioning blocks 105 on both sides, the positioning blocks 105 on both sides are in tight contact with the inner wall of the piston skirt and the piston is clamped, thereby achieving effective positioning of the piston, and by rotationally adjusting the positioning blocks 105, the positioning blocks 105 can meet the positioning requirements of pistons of different models, avoiding the replacement of positioning components, and thus making the positioning of the piston more efficient.

[0023] The fixing seat 104 is fixedly mounted on the positioning seat 102, and rectangular grooves 107 are provided on both sides of the fixing seat 104. The connecting shaft 106 is rotatably mounted on the fixing seat 104 and is located in the rectangular grooves 107. The positioning block 105 is fixedly mounted on the connecting shaft 106. The driving assembly is mounted on the fixing seat 104. The positioning seat 102 is located above the base 101. The positioning seat 102 is fixed to the support column 103 by screws. The number of the positioning blocks 105 and the connecting shaft 106 are both two groups, and are distributed in the rectangular grooves 107 on both sides. The connecting shaft 106 is mounted on the rectangular grooves 107 by bearings. On the inner wall of the groove 107, the bottom end of the positioning block 105 is square-shaped and the top end is arc-shaped. The connecting shaft 106 passes through the positioning block 105. When in use, the driving assembly drives the positioning blocks 105 on both sides to rotate toward the side away from each other under the rotation cooperation of the connecting shaft 106 and the fixing seat 104, so that the positioning blocks 105 on both sides are in tight contact with the inner wall of the piston skirt and the piston is clamped, thereby achieving effective positioning of the piston, and through the rotation adjustment of the positioning block 105, the positioning block 105 can meet the positioning requirements of pistons of different models, avoiding the replacement of the positioning components, and thus making the positioning of the piston more efficient.

[0024] Secondly, the driving cone 108 is installed on the fixed seat 104 through the rotating member and is close to the positioning block 105. The driving cone 108 is a conical structure, and its lower end diameter is smaller than the upper end diameter. The rotating member drives the driving cone 108 to move downward, so that the driving cone 108 pushes the positioning blocks 105 on both sides to rotate, thereby achieving a rotation effect on the positioning blocks 105.

[0025] Again, the screw 109 passes through the positioning seat 102, and the thread passes through the fixing seat 104, and the driving cone 108 is fixedly mounted on the screw 109; the connecting plate 110 is fixedly mounted on the end of the screw 109 away from the driving cone 108; the rotating rod 111 is fixedly mounted on the connecting plate 110, the positioning seat 102 is provided with a through hole for the screw 109 to pass through, the middle part of the fixing seat 104 is provided with a threaded hole, and the connecting plate 110 is disc-shaped. Structure, the connecting disk 110 is welded to the bottom end of the screw 109, the number of the rotating rods 111 is two groups, and they are symmetrically distributed on both sides of the connecting disk 110, one end of the rotating rod 111 is a spherical structure, rotating the rotating rod 111 drives the connecting disk 110 to rotate, and the connecting disk 110 drives the screw 109 to rotate, and the screw 109 moves along the fixing seat 104 by cooperating with the thread of the fixing seat 104, thereby driving the driving cone 108 to move.

[0026] In this embodiment, when in use, the end of the piston with the skirt is moved downward so that the positioning blocks 105 on both sides are inserted into the skirt of the piston, and then the rotating rod 111 is rotated to drive the connecting disk 110 to rotate. The rotation of the connecting disk 110 drives the screw 109 to rotate accordingly through the fixed connection with the screw 109. Since the screw 109 is threadedly connected to the fixing seat 104, the screw 109 moves downward along the fixing seat 104. The movement of the screw 109 drives the driving cone 108 fixedly connected thereto to move downward. The periphery of the piston is an inclined surface, and the movement of the driving cone 108 pushes the positioning blocks 105 on both sides to rotate toward the side away from each other under the rotation cooperation of the connecting shaft 106 and the fixing seat 104, so that the positioning blocks 105 on both sides are in tight contact with the inner wall of the piston skirt and the piston is clamped. Subsequently, the top end of the piston is limited by the action of the pressing device, thereby realizing effective positioning of the piston, and by adjusting the rotation of the positioning block 105, the positioning block 105 can meet the positioning requirements of pistons of different models, avoiding the replacement of the positioning components, and thus making the positioning of the piston more efficient.

[0027] The second embodiment of the present application is:

[0028] See also Figure 4 ,in Figure 4It is a schematic diagram of the overall structure of a positioning tool for piston processing according to the second embodiment of the utility model. On the basis of the first embodiment, the positioning tool for piston processing according to this embodiment also includes a pressing device, which includes a top seat 201, a pressing block 202, a supporting spring 203 and a lifting assembly, and the lifting assembly has a threaded cylinder 204 and a rotating plate 205.

[0029] In this embodiment, driven by the lifting assembly, the top seat 201 drives the lower pressing block 202 to contact the top end of the piston, thereby preventing the piston from being axially offset during processing.

[0030] Among them, the top seat 201 is slidably installed on the support column 103 through the lifting assembly; the support spring 203 is sleeved on the support column 103 and is located between the top seat 201 and the positioning seat 102; the lower pressure block 202 is fixedly installed on the top seat 201, and the four corners of the top seat 201 are provided with through holes for the support column 103 to pass through. The lower pressure block 202 is a block structure and is fixed to the bottom of the top seat 201 by screws. The number of the support springs 203 is four groups, and they are sleeved on four groups of support columns 103. When in use, the lifting assembly drives the top seat 201 to move downward along the support column 103, so that the top seat 201 drives the lower pressure block 202 to contact with the top end of the piston, thereby avoiding axial displacement of the piston during processing.

[0031] Secondly, the threaded barrel 204 is threadedly connected to the support column 103, and at the same time, the threaded barrel 204 is in pressure contact with the top seat 201; the rotating piece 205 is fixedly installed on the threaded barrel 204, and the number of the threaded barrel 204 is four groups, and they are distributed on the top ends of the four groups of support columns 103. The inner side of the threaded barrel 204 is provided with a thread, and two groups of rotating pieces 205 are symmetrically provided on both sides of each group of the threaded barrel 204. The rotating piece 205 is an angular structure, and the threaded barrel 204 is driven to rotate by rotating the rotating piece 205, so that the threaded barrel 204 is matched with the thread of the support column 103 and moves along the support column 103, thereby driving the top seat 201 to move accordingly.

[0032] In this embodiment, when in use, the rotating plate 205 is rotated to drive the threaded barrel 204 to rotate, so that the threaded barrel 204 moves along the support column 103 by cooperating with the thread of the support column 103, and drives the top seat 201 to move downward along the support column 103, so that the top seat 201 drives the lower pressure block 202 to contact the top end of the piston, thereby avoiding axial displacement of the piston during processing.

[0033] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A positioning tool for piston processing, comprising a base, a positioning seat, a support column and a pressing device, wherein the support column is fixedly mounted on the base, the positioning seat is fixedly mounted on the support column, and the support column passes through the positioning seat, and the pressing device is mounted on the support column, characterized in that: Also includes a positioning device; The positioning device includes a fixed seat, a positioning block, a connecting shaft and a driving assembly. The fixed seat is fixedly installed on the positioning seat. Rectangular grooves are provided on both sides of the fixed seat. The connecting shaft is rotatably installed on the fixed seat and is located in the rectangular groove. The positioning block is fixedly installed on the connecting shaft, and the driving assembly is installed on the fixed seat.

2. The positioning tool for piston processing according to claim 1, characterized in that: The driving assembly comprises a driving cone and a rotating member. The driving cone is mounted on the fixing seat through the rotating member and is close to the positioning block.

3. The positioning tool for piston processing according to claim 2, characterized in that: The rotating component includes a screw, a connecting disk and a rotating rod. The screw passes through the positioning seat, and the thread passes through the fixing seat. The driving cone is fixedly mounted on the screw; the connecting disk is fixedly mounted on one end of the screw away from the driving cone; and the rotating rod is fixedly mounted on the connecting disk.

4. The positioning tool for piston processing according to claim 1, characterized in that: The pressing device includes a top seat, a pressing block, a support spring and a lifting assembly. The top seat is slidably mounted on the support column through the lifting assembly; the support spring is sleeved on the support column and is located between the top seat and the positioning seat; the pressing block is fixedly mounted on the top seat.

5. The positioning tool for piston processing according to claim 4, characterized in that: The lifting assembly comprises a threaded barrel and a rotating plate, wherein the threaded barrel is threadedly connected to the support column and is in pressure contact with the top seat; and the rotating plate is fixedly mounted on the threaded barrel.

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